Int 20  P - Microsoft Windows - Dosmgr - Vxd Services                      [W]

   VxD = 0015h

Note:  the desired VxD and service number are identified by the data
     immediately following the INT 20 instruction, as in:
       INT 20h
       DW  service number
       DW  VxD identifier

See Also: INT 2F/AX=1684h"DEVICE API",INT 30"Windows",#0961,#1032

(Table 0978)
Values for DOSMGR (VxD ID 0015h) service number:
 0000h get version
 0001h set exec VM data
 0002h coyp VM drive state
 0003h execute VM
 0004h get InDOS pointer
 0005h add device
 0006h remove device
 0007h instance device
 0008h get DOS critical status
 0009h enable InDOS polling
 000Ah backfill allowed
 000Bh "LocalGlobalReg"
 000Ch "Init_UMB_Area"
 000Dh "Begin_V86_App"
 000Eh "End_V86_App"
 000Fh "Alloc_Local_Sys_VM_Mem"
   EAX = number of paragraphs??? to allocate
 0010h "DOSMGR_Grow_CDSs"
 0011h "DOSMGR_Translate_Server_DOS_Call"
 0012h "DOSMGR_MMGR_PSP_Change_Notifier"

See Also: #0977,#2343 at INT 2F/AX=1684h/BX=0015h